226 



University of California Publications in Zoology [Vol. 



Table 2. — Organisms Per Cubic Meter in Plankton of 

 San Joaquin River in 1913 — (Continued) 



1913 



10/11 

 10/18 

 10/26 

 11/ 1 

 11/ 8 

 11/15 

 11/22 

 11/30 

 12/ 6 

 12/14 

 12/20 

 12/27 



1/ 5 

 1/12 

 1/19 

 1/25 

 2/ 2 

 2/ 8 

 2/15 

 2/23 

 3/ 1 

 3/ 8 

 3/15 

 3/23 

 3/29 

 4/ 5 

 4/13 

 4/19 

 4/26 

 5/ 3 

 5/10 

 5/17 

 5/24 

 5/31 

 6/ 7 

 6/16 

 6/21 

 6/28 

 7/ 5 

 7/12 

 7/19 

 7/26 

 8/ 2 

 8/ 9 

 8/15 

 8/23 

 8/31 

 9/ 6 

 9/13 

 9/20 

 9/27 

 10/ 4 

 10/11 

 10/18 

 10/26 

 11/ 1 

 11/ 8 

 11/15 



64,000 



6,400 

 12,800 



12,800 

 12,800 

 25,600 



12,800 



25,600 

 12,800 



Total 

 Ploima 



637,376 



2,830,016 



3,185,792 



3,949,312 



2,168,736 



565,664 



811,040 



427,872 



154,544 



239,536 



159,440 



9S,544 



400 

 1,200 



6,400 

 3,200 



1,600 

 3,200 



893,376 



3,422,976 



3,515,968 



3,981,312 



2,194,336 



629,664 



817,440 



427,872 



164,144 



245,936 



165,840 



101,744 



3,200 

 6,400 



6,400 



44,800 

 12,800 

 38,400 



102,400 

 51,200 

 51,200 

 12,800 



" 12,800 



6,400 



6,400 



3,200 



6,400 



6,400 



6,400 



3,200 



6,400 



Cyclops 



400 

 800 



3,200 



'3,206 

 12,800 



19,200 

 6,400 

 6,400 

 6,400 



12,800 



25,600 



12,S00 



Nauplii 



400 



800 



2,800 



9,600 



3,200 



3,200 



1,600 

 1,600 



3,200 



12,800 

 25,600 



3,203 



3,200 

 6,400 

 6,400 



6,400 



6,400 



6,400 



6,400 



12,800 



211,584 



105,792 



105,792 



25,600 

 38,400 



